A simple and bandwidth efficient staggered broadcasting protocol for hot videos in VoD service

In providing video-on-demand (VoD) service to a number of clients through networks, two major technical issues are focused on both to reduce the viewer’s waiting time maintaining a given bandwidth allocation and the client’s buffer requirements. In this paper, we propose a pagoda staggered broadcasting (PSB) method which has a simple structure and substantially improves VoD efficiency. The proposed method performs significantly better than the existing VoD methods in the viewer’s waiting time and the buffer requirement with simplicity. The numerical results demonstrate that the viewer’s waiting time of the PSB method is nearly equal to the existing pagoda broadcasting methods. However the complexity of this method decreases up to 60% if dividing coefficient h is 1 by adjusting the short front part of a video.